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skeletons: simplify the protections against "unused" warnings.

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* data/c.m4 (b4_parse_param_use): Also accept optional arguments
	to "use".
	Simplify callers.
	* data/glr.c (yyuserAction): Simplify use of b4_parse_param_use.
	(yy_reduce_print): Don't use b4_parse_param_use, as all the arguments
	_are_ used.
	* data/lalr1.cc (YY_SYMBOL_PRINT): Even when disabled, "use" the
	symbol argument.
	This neutralizes a warning in yypush_ when there are no symbols
	with a semantic values.
	(yy_destroy_): Remove useless "use" of yymsg.
This commit is contained in:
Akim Demaille
2012-02-09 14:02:22 +01:00
parent f86a780785
commit beadb220d5
3 changed files with 15 additions and 21 deletions
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3
data/lalr1.cc
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@@ -441,7 +441,7 @@ b4_percent_code_get[]dnl
#else /* !YYDEBUG */
# define YYCDEBUG if (false) std::cerr
# define YY_SYMBOL_PRINT(Title, Symbol) static_cast<void>(0)
# define YY_SYMBOL_PRINT(Title, Symbol) YYUSE(Symbol)
# define YY_REDUCE_PRINT(Rule) static_cast<void>(0)
# define YY_STACK_PRINT() static_cast<void>(0)
@@ -545,7 +545,6 @@ b4_percent_code_get[]dnl
symbol_base_type<Exact>& yysym) const
{
int yytype = yysym.type_get ();
YYUSE (yymsg);
if (yymsg)
YY_SYMBOL_PRINT (yymsg, yysym);